U121F

U121F Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U121F Diagnosis

This fault indicates that the circuit is drawing more current than it is designed to supply, and possibly there is a wiring fault shorting this circuit to ground. The fault remains active until the ignition is turned ON when the fault is no longer present.Determine if the extra switch is not required for the vehicle or if the switch has been installed but the necessary reference parameter has not been programmed into the BHM.

The BHM measures the current on this circuit when the starter output is commanded ON. This fault indicates the magnetic switch or the wiring between the BHM and the magnetic switch is open circuit.

Ford U121F Fault Code Meaning :

Ford U121F Symptoms :

Ford U121F Reasons :

How To Fix Ford U121F Trouble Code ?

Which Ford cars have the code U121F?

  • U121F Ford Aerostar
  • U121F Ford Bronco
  • U121F Ford C-Max
  • U121F Ford C-Max Energi
  • U121F Ford C-Max Hybrid
  • U121F Ford Contour
  • U121F Ford Crown Victoria
  • U121F Ford EcoSport
  • U121F Ford Econoline
  • U121F Ford Edge
  • U121F Ford Escape
  • U121F Ford Escape Hybrid
  • U121F Ford Escort
  • U121F Ford Everest
  • U121F Ford Excursion
  • U121F Ford Expedition
  • U121F Ford Explorer
  • U121F Ford Explorer Sport Trac
  • U121F Ford F-150
  • U121F Ford F-250
  • U121F Ford F-350
  • U121F Ford Fiesta
  • U121F Ford Flex
  • U121F Ford Focus
  • U121F Ford Focus Electric
  • U121F Ford Freestar
  • U121F Ford Freestyle
  • U121F Ford Fusion
  • U121F Ford Fusion Energi
  • U121F Ford Fusion Hybrid
  • U121F Ford Fusion Plug-In Hybrid
  • U121F Ford GT
  • U121F Ford Mustang
  • U121F Ford Mustang Mach-E
  • U121F Ford Mystique
  • U121F Ford Probe
  • U121F Ford Ranger
  • U121F Ford Taurus
  • U121F Ford Taurus X
  • U121F Ford Tempo
  • U121F Ford Thunderbird
  • U121F Ford Transit
  • U121F Ford Transit Connect
  • U121F Ford Windstar

A code is a fault code and it indicates that something has gone wrong with your car's engine.

It can be caused by many different problems, including a faulty battery, a bad fuel pump, or even a cracked exhaust manifold.

You will need to diagnose the problem before you can fix it. The best way to do this is with an OBD scanner tool.

A scan tool will tell you what needs fixing and how much it will cost in order to fix that particular issue.